Aliens could come in a 3D balloon world settlement
Besides many advanced aliens and our own future genetically advancing folks most likely preferring to often enjoy various entertainments, (including shared intimate sensual pleasures with beloved mates, instead of being too exclusively dedicated to serious high tech matters), we should also expect that many will prefer biogenetic improvements to help them live much longer with limited aging, while preferring improvements to nicely become more totally healthy. These can much aid long interstellar voyages , preventing any from getting bored to death.